205025021002 has 8 divisors (see below), whose sum is σ = 308049243012. Its totient is φ = 102341940000.

The previous prime is 205025020997. The next prime is 205025021011. The reversal of 205025021002 is 200120520502.

It can be written as a sum of positive squares in 2 ways, for example, as 204413398641 + 611622361 = 452121^2 + 24731^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85283749 + ... + 85286152.

Almost surely, 2^205025021002 is an apocalyptic number.

205025021002 is a deficient number, since it is larger than the sum of its proper divisors (103024222010).

205025021002 is a wasteful number, since it uses less digits than its factorization.

205025021002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170570504.

The product of its (nonzero) digits is 400, while the sum is 19.

Adding to 205025021002 its reverse (200120520502), we get a palindrome (405145541504).

The spelling of 205025021002 in words is "two hundred five billion, twenty-five million, twenty-one thousand, two".